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(No Model.)

J. B. ARM 8v J. CHAPMAN.

STEAM RADIATOR.

No. 320,203. Patented June 16, 1885.

WI-TNESSES INVENTOR Gym/M; W

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STATES ATENT Fries.

JUAN B. AROI AND JOHN CHAPMAN, OF BROOKLYN, NEW YORK.

STEAM-RADIATOR.

SPECIFICATION forming part of Letters Patent No. 320,203, dated June 16, 1885.

(No model.)

To all whom it may concern Be it known that we, JUAN B. AROI and JOHN CHAPMAN, both of Brooklyn, in the county of Kings and'State of New York, have invented a new and Improved SteanrRadiator, of which thefollowing isa full, clear, and exact description.

This invention relates to steammadiators composed of upper and lower steam-chambers with connecting steam-pipes; and the invention consists, principally, in the employment ofindependent tubes for coupling the steampipes to the steam-chambers, whereby any of the pipes may be removed from the radiator without disturbing the other pipes.

The invention also consists of the construction, arrangement, and combination of parts, all as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a partly sectional elevation of a radiator made in accordance with our invention, and Fig. 2 is a transverse sectional elevation taken on the line 00 w of Fig. 1.

A represents the upper and B the lower steam-chamber, and O 0 represent the steampipes. The pipes O in this instance are each connected to the lower steam-chamber, B, by a screw-threaded shank, c, entering a screwthreaded opening, 0, made in the upper wall of the steam-chamber, as shown in Fig. 1. At their upper ends the pipes O are connected with the steam-chamber A by the independent coupling-pipes or short tubes D. These are externally screw-threaded, and enter the screw-threaded openings I) of the pipes and the screw threaded openings a of the chamber A. The tubes D are made somewhat longer than the shanks 0, so that when any tube D is screwed down into the pipes O, as

shown in dotted lines in Fig. 2, sufficient space will be left between the upper end of the tube D and the lower surface of the chamber A to permit the pipe to be unscrewed from the lower steam-chamber, B, and thus removed from and replacedin the radiator without disturbing any of the other pipes. For convenience in turning the tubes D, they are each formed with a many-sided flange, d, to which a wrench maybe applied. Upon each tube D is placed a jam-nut, e, which -is screwed down upon the ends of the pipes O to lock the tube and to form steamtight joints between the tubes and the pipes. If found necessary, soft packing f 9 may be placed upon the coup lingtube D, to form steam-tight joints be- The tubes 0 and the chamber A, screw-- threaded at a b, in combination with the coupling-pipes D, .collars d, and jam-nuts e, the coupling-pipes being externally screw-threaded above and below the collars d, and the jam nuts e screwed upon the coupling-pipes below the collar (1, substantially as described.

JUAN B. AROI. JOHN CHAPMAN.

Witnesses:

F. W. PRosoHER, JAMES P. Roenns. 

